The example problem is this video has a sequence of numbers that decrease by a fixed amount with each iteration, and one needs to find the 100th number in the sequence. Sal shows the listener how to find the pattern between the number...

Sal uses the formula for perimeter to show how the variables can be moved around to solve a problem. He demonstrates a few different ways to do this.

An example of writing an algebraic equation of the pattern of blocks that grows at each iteration is shown in this video. Sal shows how to find the pattern by looking at the iteration number and number of blocks. He then continues this...

After defining a simple function from a word problem, a short video shows how one could find the domain and the range of that function. The instruction reinforces the definitions of domain and range with a concrete example.

A simple rate problem is looked at in this video. The listener needs to compute whether four trains each going different distances over different amounts of time are moving at the same constant rate. This problem reinforces ones basic...

Guavas are on sale in this video. Here two examples are shown to calculate a discounted rate.

A good explanation for blossoming mathematicians, this video explains the difference between average and central tendency, as well as arithmetic mean, median, and mode. Those who haven't grasped these concepts in algebra or those who are...

Sal teaches how to use graphing as a tool, not a hindrance, in this helpful video. His lecture would make be a good resource for your algebra class, particularly as the focus shifts to graphing problems and linear systems.

If your class struggles with graphing inequalities, or if your lecture could use some help from Sal, this video would be a great help. Sal's instruction is measured and patient, and viewers will walk away feeling more confident and...

The odds will be in your favor that young statisticians will volunteer to participate in this experiment. After watching a short video that is part of the PBS Math at the Core middle school collection, scholars engage in a lottery and...

And the beat goes on. The installment of the Math at the Core: Ratios series introduces time signatures in music. A musician shows the relationship between different types of musical beats. Working in pairs, classmates create beat...

Be an octave above the rest. A musician explains how to write music in different time signatures. An interesting resource continues to demonstrate ratios using the pitch of musical notes and hertz. Pupils use a pitch table and determine...

The star of the show is ratios. The informative resource explains how to transpose music using ratios. Individuals transpose the song "Twinkle, Twinkle" in the activity by applying their ratio skills. The activity challenges class...

What's that sound? Transpose music proportionally using a ukulele. A ukulele artist explains how math is beneficial in transposing songs written in one key to another. The video demonstrates that transposing keeps the ratio between the...

Just how much spray paint does a mural require? Using proportions, graffiti artists determine the amount of supplies needed to complete a mural. The creative resource shows how to determine the area of composite figures and uses that...

Using an installment from the Math at the Core series, pupils learn about Kapa cloth, which is made from bark. The video shows how much cloth one cup of bark makes. Then classmates, working in pairs, determine the number of cups of bark...

Speed up your learning of distance, rate, and time problems. Future mathematicians view a video to review how to determine distance, rate, or time, given the other two quantities. They watch as the narrator works through several examples.

More power to you if you can calculate volumes. Viewers of an informative YouTube video learn about the volumes of similar three-dimensional figures. They see how figures with sides that have a scale factor of n have volumes with a scale...

Just how similar are the areas of similar figures? An educational YouTube video describes how to determine the areas of similar figures. Given the area of one figure and the measurements of corresponding sides of each figure, viewers see...

Scale up a lesson on similarity. Young mathematicians watch a video that investigates the sides of similar figures. They see how to calculate missing sides from the given measures using scale factors.

Don't flip out over the resource, but be sure to flip the figures. By watching a short YouTube video, scholars learn about reflections in the coordinate plane. They see how to identify the line of reflection given two figures.

What comes next? Scholars view a video that explains how to determine the next figure in a pattern. They connect the figures to arithmetic sequences and write explicit formulas for the patterns.

Something missing from your knowledge of sequences? Viewers of a short YouTube video learn how to find missing values in a sequence. These include arithmetic and geometric sequences, as well as patterns that do not fit either category.

Equip learners to work independently on probability in no time. A short video describes methods for determining the probability of independent events. It includes examples where the order of events is important and must be taken into...